Pin-tongue.



No. 782,951. PATENTBD FEB. 21, 1905. G. W. DOVER.

PIN-TONGUE.

APPLICATION FILED 11110.8, 1904.

M T/\/E55E5/ vEA/ 712R UNITED STATES Patented February 21, 1905.

PATENT OFFICE.

PIN-TONGUE.

SPECIFICATION forming part of Letters Patent No. 782,951, dated February 21, 1905.

Application filed December 8, 1904:- Scrial No. 235,928.

To all whom it may concern.-

Be it known that I, GEORGE WILLIAM DovER, a citizen of the United States, residing at Oranston, in the county of Providence and State of Rhode Island, have invented certain newand useful Improvements in Pin-Tongues, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to pin-tongues designed for use as. a component in the manufacture of brooches, pins, and analogous articles of jewelry, but particularly to that class of pin-tongues having a hook-shaped head or hearing. One of the many weaknesses of this class of pins is a tendency of the free end of the hook to loosen its spring-grip upon the pintle when the tongue is in open position.

To the end, primarily, of overcoming this weakness my invention consists in the novel structure hereinafter describedin connection with the accompanying drawings, wherein Figure 1 is a side elevation of the head end of a pin-tongue shaft; Fig. 2, a perspective view of the cap or housing; Fig. 3, a similar view of the latter applied to the pin-tongue head, showing in broken lines a portion of the stem; Fig. 4, a longitudinal section of the same mounted in a cup, taken on line as m of Fig. 5; Fig. 5, a transverse section of the same on line 2 'g of Fig. at, and Fig. 6a detail view of the pintle.

Like reference-letters indicate like parts throughout the views.

My novel pin-tongue is formed as follows-: A bar of metal circular in cross-section, a, has its blunt end bent into a hook shape with a springy free end 5. Over the head thus formed is slipped a cap 0. By suitably-shaped swaging-dies the opposite sides of the cap within the hook are forced into contact with each other to form a web 0, a rib or projection (Z formed upon the rear portion of the cup, and the marginal rib 0 flattened. The web is then perforated, e, and the tongue is complete. The pintle e, which has preferably rounded ends, is next driven into the opening 6, and the whole is then ready to mount. I prefer to mount-my pin-tongue in a cup-settingm, whose walls m receive the pintle c as a driving fit,

such that the pintle will remain stationary in the walls m, while the pin-tongue moves frictionally theron. In Fig. 4 the tongue is shown in open position by dotted lines, indicating the position of the stop (Z in contact with the base of the cup 112.

It will be observed that the web 0 provides two contacting walls or surfaces, which can be readily perforated without injury to the punching tool or torsion of the cap, the space thus afforded being such that there is no cutting or abrasion of metal comprising the bent portion of the pin-tongue shaft.

As will be observed by reference to Fig. 3, the swaging of the cap on the tongue provides a lateral indentation in the cap disposed in the bight of the pin-tongue. This indentation serves to effectually prevent the cap slipping off the hook shaped head of the tongue when the tongue is subjected to the action of the perforating-dies. It will be further noted that the rounded form of pintle inserted in the pin-tongue facilitates mounting, since when the cup-walls m of the usual form of setting are pinched inwardly upon the pintle the rounded pintle ends guide the latter into position and renders the completed joint perfectly tight. The perforation receiving the pintle is formed in the web of the cap alone, and therefore does not tend to weaken the stock of the pin-tongue, which is obviously an important advantage. The arrangement of the pintle in the web of the cap also avoids the spring-pressure of the tongue upon the pintle, and hence contributes to the durability of the latter.

Having described my invention, what I claim is 1. As a new article of manufacture, a pintongue provided with a hook-shaped head and a cap secured on the head and having parallel contacting and apertured portions forming a web within the head. I

2. As a new article of manufacture, a pintongue provided with ahook-shaped head and a cap secured on the head and having parallel contacting and apertured portions forming a web within the head and also having means for'limiting the movement of the tongue.

3. As a new article of manufacture, a pinjoint comprising a setting, a pin-tongue provided with a hook-s11aped head and a cap secured on the head and having contacting and apertured portions forming a web within the head; said head and cap being disposed in the setting, and a pintle traversing the setting and the web of the cap.

t. As a new article of manufacture, a pintongue comprising a shaft, a hook-shaped head upon the shaft, and a cap embracing the head and whose walls are in contact and having a perforation through the walls, and also having a projection upon the rear of the cap.

5. As a new article of manufacture, a pinjoint comprising a pin-tongue, a setting in which the pin-tongue is mounted, and a pintle with rounded ends traversing the setting and pin-tongue.

(5. As a new article of manufacture, a pintongue provided with a hook-shaped head and a cap arranged on the head and having a lateral indentation disposed in the bight of the head. In testimony whereof I have affixed my signature in presence of two witnesses.

GEORGE WILLIAM. DOVER.

Witnesses:

l-IoRATIo' BELLOWS, VILLIAM E. BROWN. 

